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When using the Guardian 4 transmitter, it's important to be aware of certain risks to ensure safe and effective operation. Here are key considerations:

Bleeding at the Insertion Site: If bleeding occurs during sensor insertion, apply steady pressure with sterile gauze or a clean cloth for up to three minutes. If bleeding persists, do not connect the transmitter to the sensor, as blood may enter the transmitter connector and damage the device. In such cases, remove the sensor, continue applying pressure until bleeding stops, and insert a new sensor in a different location.

Proper Insertion Techniques: Always wash your hands with soap and water before inserting the sensor to prevent infection. Do not insert the sensor through tape, as this can lead to improper insertion and function. Use alcohol to prepare the insertion site, ensuring no residue is left on the skin. Rotate insertion sites to avoid overuse of any single area.

Device Exposure to Strong Magnetic Fields: Avoid exposing the transmitter to MRI equipment, diathermy devices, or other sources of strong magnetic fields. Such exposure can damage the device. If accidental exposure occurs, discontinue use and contact technical support for assistance.

Handling and Maintenance: Do not clean, resterilize, or attempt to extract the needle from the needle housing, as this may lead to accidental needlestick injuries. Sensors are designed for single use; reusing them can cause damage, leading to inaccurate glucose readings, site irritation, or infection.

Chemical Exposure Warning: The Guardian 4 Transmitter Kit contains chemicals, including benzophenone, known to cause cancer and/or birth defects or other reproductive harm. Handle the device according to the manufacturer's instructions to minimize exposure.

By adhering to these guidelines, you can mitigate potential risks associated with the Guardian 4 transmitter and ensure its safe and effective use.

The Guardian™ 4 Transmitter is an essential component of the MiniMed™ 780G system, designed to wirelessly transmit glucose data from the Guardian™ 4 Sensor to your insulin pump. To ensure optimal performance and accurate glucose readings, it's important to understand how to properly pair, charge, and maintain your transmitter.

Pairing the Transmitter with Your Pump

Before using your sensor, you must pair the transmitter with your insulin pump:

1. Charge the Transmitter: Connect the transmitter to its charger and ensure it's fully charged. The charger's green light will stay on for 15 to 20 seconds and then turn off when charging is complete.

2. Initiate Pairing on the Pump: From the pump's Home screen, navigate to the menu and select "Pair Device."

3. Start the Pairing Process: Place the charged transmitter next to the pump. Select "Pair New Device" on the pump and immediately remove the transmitter from the charger. The transmitter's light will flash 10 times and then turn off.

4. Confirm Pairing: On the pump, a list of available devices will appear. Select the device that matches the serial number on the back of your transmitter. A "Pairing successful!" message will confirm the connection.

Maintaining a Strong Connection

To ensure continuous communication between your transmitter and pump:

• Proximity: Keep the transmitter and pump within 6 feet of each other.

• Avoid Interference: Stay away from electronic devices that might cause signal interference, such as cell phones or other wireless devices.

• Check for Damage: Regularly inspect the transmitter for any physical damage or corrosion, especially around the connector pins.

Troubleshooting Signal Issues

If you receive alerts like "Sensor signal not found" or "Lost sensor signal":

• Ensure Compatibility: Confirm that your transmitter is compatible with your pump model.

• Verify Serial Number: Ensure the transmitter's serial number matches the one entered in your pump.

• Charge the Transmitter: A fully charged transmitter operates for at least seven days without recharging.

• Minimize Interference: Keep other electronic devices at least 12 feet away to prevent signal disruption.

By following these guidelines, you can maintain effective communication between your Guardian™ 4 Transmitter and insulin pump, ensuring accurate and reliable glucose monitoring.